Year % of total final energy consumption 1990 21.1 1991 26.3 1992 26.3 1993 30.4 1994 32.4 1995 30.8 1996 30.2 1997 30.5 1998 30 1999 26.9 2000 27.9 2001 26 2002 26 2003 24.8 2004 24.4 2005 23.9 2006 21.2 2007 21 2008 23.8 2009 22.1 2010 21.2 2011 20.8 2012 24.3 2013 25.9 2014 26.1 2015 26.4 2016 23.9 2017 21.8 2018 21.9 2019 19.7 2020 23.4 2021 22.6 2022 21.8